From 93d3ddb033d522d127487617f4432e412ec292c3 Mon Sep 17 00:00:00 2001
From: Greg Gianforcaro <greggian@gmail.com>
Date: Sat, 23 Nov 2019 00:26:59 -0500
Subject: [PATCH] Fix modifying circle geometries

The Snap interaction may have altered the event coordinate, so Modify
should use the event coordinate whenever available.

Resolves #10316
---
 src/ol/interaction/Modify.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/ol/interaction/Modify.js b/src/ol/interaction/Modify.js
index 42d6fda4dc..fe81a771ee 100644
--- a/src/ol/interaction/Modify.js
+++ b/src/ol/interaction/Modify.js
@@ -807,8 +807,8 @@ class Modify extends PointerInteraction {
     if (!this.condition_(evt)) {
       return false;
     }
-    this.handlePointerAtPixel_(evt.pixel, evt.map);
     const pixelCoordinate = evt.coordinate;
+    this.handlePointerAtPixel_(evt.pixel, evt.map, pixelCoordinate);
     this.dragSegments_.length = 0;
     this.modified_ = false;
     const vertexFeature = this.vertexFeature_;
@@ -916,16 +916,17 @@ class Modify extends PointerInteraction {
    */
   handlePointerMove_(evt) {
     this.lastPixel_ = evt.pixel;
-    this.handlePointerAtPixel_(evt.pixel, evt.map);
+    this.handlePointerAtPixel_(evt.pixel, evt.map, evt.coordinate);
   }
 
   /**
    * @param {import("../pixel.js").Pixel} pixel Pixel
    * @param {import("../PluggableMap.js").default} map Map.
+   * @param {import("../coordinate.js").Coordinate=} opt_coordinate The pixel Coordinate.
    * @private
    */
-  handlePointerAtPixel_(pixel, map) {
-    const pixelCoordinate = map.getCoordinateFromPixel(pixel);
+  handlePointerAtPixel_(pixel, map, opt_coordinate) {
+    const pixelCoordinate = opt_coordinate || map.getCoordinateFromPixel(pixel);
     const projection = map.getView().getProjection();
     const sortByDistance = function(a, b) {
       return projectedDistanceToSegmentDataSquared(pixelCoordinate, a, projection) -